./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/gcd_2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c306c7b8-3e05-4ee6-b202-c9775e47809a/bin/ukojak-LBtLqBUTdQ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c306c7b8-3e05-4ee6-b202-c9775e47809a/bin/ukojak-LBtLqBUTdQ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c306c7b8-3e05-4ee6-b202-c9775e47809a/bin/ukojak-LBtLqBUTdQ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c306c7b8-3e05-4ee6-b202-c9775e47809a/bin/ukojak-LBtLqBUTdQ/config/KojakReach.xml -i ../../sv-benchmarks/c/bitvector/gcd_2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c306c7b8-3e05-4ee6-b202-c9775e47809a/bin/ukojak-LBtLqBUTdQ/config/svcomp-Overflow-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c306c7b8-3e05-4ee6-b202-c9775e47809a/bin/ukojak-LBtLqBUTdQ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7da096d64cf3390a2bb7c442378ab6f697dfdf0fd9d4078975ad6171409858bb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 01:10:33,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:10:33,659 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:10:33,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:10:33,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:10:33,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:10:33,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:10:33,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:10:33,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:10:33,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:10:33,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:10:33,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:10:33,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:10:33,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:10:33,719 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:10:33,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:10:33,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:10:33,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:10:33,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:10:33,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:10:33,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:10:33,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:10:33,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:10:33,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:10:33,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:10:33,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:10:33,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:10:33,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:10:33,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:10:33,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:10:33,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:10:33,754 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:10:33,756 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:10:33,758 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:10:33,760 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:10:33,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:10:33,761 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:10:33,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:10:33,762 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:10:33,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:10:33,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:10:33,767 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c306c7b8-3e05-4ee6-b202-c9775e47809a/bin/ukojak-LBtLqBUTdQ/config/svcomp-Overflow-32bit-Kojak_Default.epf [2021-11-23 01:10:33,808 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:10:33,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:10:33,810 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 01:10:33,810 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-11-23 01:10:33,811 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 01:10:33,811 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 01:10:33,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:10:33,812 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 01:10:33,812 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 01:10:33,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:10:33,813 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 01:10:33,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:10:33,813 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 01:10:33,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:10:33,814 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 01:10:33,814 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-23 01:10:33,814 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 01:10:33,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 01:10:33,815 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:10:33,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 01:10:33,815 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-23 01:10:33,816 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-23 01:10:33,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:10:33,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 01:10:33,817 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:10:33,817 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:10:33,817 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 01:10:33,818 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-23 01:10:33,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 01:10:33,818 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 01:10:33,818 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c306c7b8-3e05-4ee6-b202-c9775e47809a/bin/ukojak-LBtLqBUTdQ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c306c7b8-3e05-4ee6-b202-c9775e47809a/bin/ukojak-LBtLqBUTdQ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7da096d64cf3390a2bb7c442378ab6f697dfdf0fd9d4078975ad6171409858bb [2021-11-23 01:10:34,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:10:34,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:10:34,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:10:34,116 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:10:34,117 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:10:34,119 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c306c7b8-3e05-4ee6-b202-c9775e47809a/bin/ukojak-LBtLqBUTdQ/../../sv-benchmarks/c/bitvector/gcd_2.c [2021-11-23 01:10:34,190 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c306c7b8-3e05-4ee6-b202-c9775e47809a/bin/ukojak-LBtLqBUTdQ/data/427a36965/4a418724aa7d4f17bdca1c661c7ea6e6/FLAG13a985125 [2021-11-23 01:10:34,717 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:10:34,718 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c306c7b8-3e05-4ee6-b202-c9775e47809a/sv-benchmarks/c/bitvector/gcd_2.c [2021-11-23 01:10:34,724 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c306c7b8-3e05-4ee6-b202-c9775e47809a/bin/ukojak-LBtLqBUTdQ/data/427a36965/4a418724aa7d4f17bdca1c661c7ea6e6/FLAG13a985125 [2021-11-23 01:10:35,107 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c306c7b8-3e05-4ee6-b202-c9775e47809a/bin/ukojak-LBtLqBUTdQ/data/427a36965/4a418724aa7d4f17bdca1c661c7ea6e6 [2021-11-23 01:10:35,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:10:35,112 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:10:35,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:10:35,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:10:35,120 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:10:35,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:10:35" (1/1) ... [2021-11-23 01:10:35,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@418fc3d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:35, skipping insertion in model container [2021-11-23 01:10:35,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:10:35" (1/1) ... [2021-11-23 01:10:35,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:10:35,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:10:35,282 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c306c7b8-3e05-4ee6-b202-c9775e47809a/sv-benchmarks/c/bitvector/gcd_2.c[664,677] [2021-11-23 01:10:35,295 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:10:35,304 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 01:10:35,316 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c306c7b8-3e05-4ee6-b202-c9775e47809a/sv-benchmarks/c/bitvector/gcd_2.c[664,677] [2021-11-23 01:10:35,321 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:10:35,335 INFO L208 MainTranslator]: Completed translation [2021-11-23 01:10:35,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:35 WrapperNode [2021-11-23 01:10:35,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:10:35,337 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 01:10:35,337 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 01:10:35,337 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 01:10:35,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:35" (1/1) ... [2021-11-23 01:10:35,352 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:35" (1/1) ... [2021-11-23 01:10:35,374 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 51 [2021-11-23 01:10:35,375 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 01:10:35,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 01:10:35,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 01:10:35,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 01:10:35,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:35" (1/1) ... [2021-11-23 01:10:35,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:35" (1/1) ... [2021-11-23 01:10:35,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:35" (1/1) ... [2021-11-23 01:10:35,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:35" (1/1) ... [2021-11-23 01:10:35,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:35" (1/1) ... [2021-11-23 01:10:35,395 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:35" (1/1) ... [2021-11-23 01:10:35,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:35" (1/1) ... [2021-11-23 01:10:35,398 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 01:10:35,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 01:10:35,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 01:10:35,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 01:10:35,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:35" (1/1) ... [2021-11-23 01:10:35,417 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 01:10:35,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c306c7b8-3e05-4ee6-b202-c9775e47809a/bin/ukojak-LBtLqBUTdQ/z3 [2021-11-23 01:10:35,454 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c306c7b8-3e05-4ee6-b202-c9775e47809a/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-23 01:10:35,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c306c7b8-3e05-4ee6-b202-c9775e47809a/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-23 01:10:35,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 01:10:35,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 01:10:35,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 01:10:35,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 01:10:35,584 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 01:10:35,586 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 01:10:35,707 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 01:10:35,742 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 01:10:35,745 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 01:10:35,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:10:35 BoogieIcfgContainer [2021-11-23 01:10:35,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 01:10:35,749 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-11-23 01:10:35,749 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-11-23 01:10:35,757 INFO L275 PluginConnector]: CodeCheck initialized [2021-11-23 01:10:35,758 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:10:35" (1/1) ... [2021-11-23 01:10:35,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:10:35,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:10:35,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 13 states and 15 transitions. [2021-11-23 01:10:35,828 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-11-23 01:10:35,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 01:10:35,831 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:10:35,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:10:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:10:35,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:10:36,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:10:36,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 12 states and 14 transitions. [2021-11-23 01:10:36,018 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2021-11-23 01:10:36,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-23 01:10:36,018 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:10:36,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:10:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:10:36,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:10:36,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:10:36,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 11 states and 13 transitions. [2021-11-23 01:10:36,118 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2021-11-23 01:10:36,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-23 01:10:36,118 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:10:36,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:10:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:10:36,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:10:36,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:10:36,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 13 states and 16 transitions. [2021-11-23 01:10:36,302 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2021-11-23 01:10:36,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-23 01:10:36,302 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:10:36,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:10:36,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:10:36,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:10:36,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:10:36,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 12 states and 15 transitions. [2021-11-23 01:10:36,414 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2021-11-23 01:10:36,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 01:10:36,415 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:10:36,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:10:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:10:36,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:10:36,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:10:36,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 9 states and 11 transitions. [2021-11-23 01:10:36,694 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2021-11-23 01:10:36,695 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 01:10:36,695 WARN L419 CodeCheckObserver]: This Program is SAFE, Check terminated with 6 iterations. [2021-11-23 01:10:36,709 INFO L754 CodeCheckObserver]: All specifications hold 4 specifications checked. All of them hold [2021-11-23 01:10:36,733 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2021-11-23 01:10:36,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 01:10:36 ImpRootNode [2021-11-23 01:10:36,739 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-11-23 01:10:36,741 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 01:10:36,741 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 01:10:36,741 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 01:10:36,742 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:10:35" (3/4) ... [2021-11-23 01:10:36,745 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 01:10:36,758 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-11-23 01:10:36,758 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-11-23 01:10:36,759 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-23 01:10:36,759 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 01:10:36,816 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c306c7b8-3e05-4ee6-b202-c9775e47809a/bin/ukojak-LBtLqBUTdQ/witness.graphml [2021-11-23 01:10:36,822 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 01:10:36,826 INFO L158 Benchmark]: Toolchain (without parser) took 1714.16ms. Allocated memory was 92.3MB in the beginning and 113.2MB in the end (delta: 21.0MB). Free memory was 58.3MB in the beginning and 84.0MB in the end (delta: -25.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 01:10:36,829 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 92.3MB. Free memory is still 59.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 01:10:36,830 INFO L158 Benchmark]: CACSL2BoogieTranslator took 222.60ms. Allocated memory is still 92.3MB. Free memory was 58.1MB in the beginning and 48.5MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 01:10:36,832 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.24ms. Allocated memory is still 92.3MB. Free memory was 48.4MB in the beginning and 46.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 01:10:36,832 INFO L158 Benchmark]: Boogie Preprocessor took 22.91ms. Allocated memory is still 92.3MB. Free memory was 46.9MB in the beginning and 45.9MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 01:10:36,833 INFO L158 Benchmark]: RCFGBuilder took 348.59ms. Allocated memory was 92.3MB in the beginning and 113.2MB in the end (delta: 21.0MB). Free memory was 45.8MB in the beginning and 85.2MB in the end (delta: -39.4MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2021-11-23 01:10:36,834 INFO L158 Benchmark]: CodeCheck took 990.34ms. Allocated memory is still 113.2MB. Free memory was 84.7MB in the beginning and 86.8MB in the end (delta: -2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 01:10:36,834 INFO L158 Benchmark]: Witness Printer took 84.63ms. Allocated memory is still 113.2MB. Free memory was 86.8MB in the beginning and 84.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 01:10:36,837 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 13 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 6, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 48 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 44 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 38 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 166 IncrementalHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 38 mSolverCounterUnsat, 0 mSDtfsCounter, 166 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 161 GetRequests, 134 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 73 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 92.3MB. Free memory is still 59.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 222.60ms. Allocated memory is still 92.3MB. Free memory was 58.1MB in the beginning and 48.5MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.24ms. Allocated memory is still 92.3MB. Free memory was 48.4MB in the beginning and 46.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.91ms. Allocated memory is still 92.3MB. Free memory was 46.9MB in the beginning and 45.9MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 348.59ms. Allocated memory was 92.3MB in the beginning and 113.2MB in the end (delta: 21.0MB). Free memory was 45.8MB in the beginning and 85.2MB in the end (delta: -39.4MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. * CodeCheck took 990.34ms. Allocated memory is still 113.2MB. Free memory was 84.7MB in the beginning and 86.8MB in the end (delta: -2.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 84.63ms. Allocated memory is still 113.2MB. Free memory was 86.8MB in the beginning and 84.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2021-11-23 01:10:36,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c306c7b8-3e05-4ee6-b202-c9775e47809a/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE